- Anderson, Sherwood (Sherwood Berton), 1876-19411
- Angle, L. C., Jr.1
- Antonakakis, Susana1
- Armistead, Mary Frances1
- Association for Women in Architecture (U.S.)1
- Association for the Preservation of Virginia Antiquities (APVA) (1889-2009)1
- Association of Collegiate Scholars in Architecture1
- Aubock, Maria, 1951-1
- Aulenti, Gae, 1929-20121
- Avery, Howard S. (Howard Shaeffer), 1906-19961
- Avitabile, James J.1
- Babcock, H. O.1
- Bailey, Pattie Dobson Talley, b.18881
- Baker family1
- Balmori, Diana1